# HSA vs HARMONY DSP

The clearest difference is update cadence: HSA at every 3 weeks against HARMONY DSP's every 19 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HSA ships an update every 3 weeks, HARMONY DSP every 19 months. The most recent releases landed on September 20, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | HSA | HARMONY DSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Size | 5 MB | 3 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [APEX Italy](https://appshunter.io/developer/1446565085) |

## What reviewers say

### HSA

[App page](https://appshunter.io/ios/app/hsa-dsp31pro/id1586421043)

**Features:** macOS Compatibility

**In-app purchases:** none


### HARMONY DSP

[App page](https://appshunter.io/ios/app/harmony-dsp/id1638244924)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HSA free?

HSA is free to download, with no in-app purchases.

### Is HARMONY DSP free?

HARMONY DSP is free to download, with no in-app purchases.

### Do HSA or HARMONY DSP have ads?

Neither HSA nor HARMONY DSP shows ads.

### Which is updated more often, HSA or HARMONY DSP?

HSA ships an update every 3 weeks, and HARMONY DSP every 19 months. Most recently, HSA was updated on September 20, 2026 and HARMONY DSP on May 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*